DStrange,
Thanks for reporting that. It can solve some "DL crashes Encore" problems.
Rookie, a first step (which you may have done) is to see if Encore can be opened on its own, do basic functions (e.g. add a menu from the library etc). If yes, then look at whether it is only the one Premiere sequence, etc.
And, yes, try DStrange's solution. You don't have to add chapters to see if works. Chapters are one of the thinks that can cause issues, so a no-chapter version is a good troubleshooting step.